claat: user custom homedir func instead of os/user
claat: user custom homedir func instead of os/user

os/user.Current doesn't work when cross-compiled.
So, use a simplified custom backed func, since all we need is the user's
home dir.

Qwiklabs/codelab-tools,Qwiklabs/codelab-tools,Qwiklabs/codelab-tools,googlecodelabs/tools,chrisrecher/tools,Qwiklabs/codelab-tools,CloudVLab/tools,googlecodelabs/tools,chrisrecher/tools,googlecodelabs/tools,CloudVLab/tools,googlecodelabs/tools